CN201297312Y - Expansive screw - Google Patents
Expansive screw Download PDFInfo
- Publication number
- CN201297312Y CN201297312Y CNU2008201687868U CN200820168786U CN201297312Y CN 201297312 Y CN201297312 Y CN 201297312Y CN U2008201687868 U CNU2008201687868 U CN U2008201687868U CN 200820168786 U CN200820168786 U CN 200820168786U CN 201297312 Y CN201297312 Y CN 201297312Y
- Authority
- CN
- China
- Prior art keywords
- pull bar
- nut
- screw
- recess
- expansive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The utility model discloses an expansive screw comprising an expansive pipe, a pull rod and a screw nut, wherein one end of the pull rod is in threaded connection with the screw nut. The expansive screw is characterized in that a dent is arranged on the end head of a threaded end of the pull rod. The expansive screw can easily solve the rotation problem of the pull rod and the screw nut in the assembly and disassembly processes, thereby enabling the assembly and disassembly processes to be simple and labor-saving.
Description
[technical field]
The utility model relates to a kind of improvement of swell fixture.
[background technique]
At present; swell fixture common on the market is generally by expansion tube; pull bar and nut are formed; put expansion tube and pull bar into mounting hole during installation; at the exposed junction of the pull bar nut of screwing on; by fastening nut material installed is fixed; yet; in installation process; through regular meeting nut appears and pull bar rotates simultaneously (if there is damage or jagged in the screw thread of pull bar and nut; there is foul residual etc. between the screw thread; all be easy to take place nut pull bar rotation phenomenon simultaneously); nut can not be screwed into pull bar smoothly; the phenomenon that material installed can not be tightened up; in unloading process, equally also can there be rotation owing to pull bar and nut, nut can not be taken off from pull bar; the problem that material installed can not unload; and after pull bar and the nut generation rotation, dealing with can be very difficult, and the installation and removal process is become to waste time and energy.
[summary of the invention]
In view of the problem that present known technology exists, the technical problems to be solved in the utility model is to be to provide a kind of swell fixture that can easily solve pull-rod nut rotation problem in the installing/dismounting process, makes installation, unloading process become simply laborsaving.
For solving the problems of the technologies described above, the utility model takes following technological scheme to finish:
A kind of swell fixture comprises expansion tube, pull bar and nut, and an end of pull bar is connected with nut thread, it is characterized in that: the threaded end termination of described pull bar is provided with a recess.Described recess is interior hexagonal deep gouge.
Adopt the swell fixture of technique scheme, if the pull-rod nut rotation takes place in installation, unloading process, can use and the suitable instrument of pull bar termination recess, recess blocked pull bar can not be rotated, very simple and practical, so installation, unloading process also just become simply laborsaving, save unnecessary trouble.
[description of drawings]
The utility model has following accompanying drawing:
Fig. 1 is a structural representation of the present utility model
Fig. 2 is the right elevation of Fig. 1
[embodiment]
Accompanying drawing has been represented the technical solution of the utility model and embodiment, further describes each relevant details and working principle thereof of embodiment below more in conjunction with the accompanying drawings.
With reference to accompanying drawing 1,2, this swell fixture, comprise expansion tube 2, pull bar 1 and nut 3, expansion tube 2 is enclosed within the outside of pull bar 1, nut 3 is screwed in the threaded end of pull bar 1, the threaded end termination of described pull bar 1 is provided with a recess 4, and this recess 4 is interior hexagonal deep gouge, and inner hexagon spanner of hexagonal deep gouge and same specification is complementary in this.Certainly; the above-mentioned recess 4 that is located at pull rod screw end termination also can be with the straight groove of flat head screw-driver coupling or with the cross recess of cross head driver coupling etc.; no matter this recess 4 is any shape; as long as can recess be blocked pull bar can not be rotated, all will fall into protection domain of the present utility model by instrument.
Claims (2)
1. a swell fixture comprises expansion tube (2), pull bar (1) and nut (3), and an end of pull bar (1) is threaded with nut (3), it is characterized in that: the threaded end termination of described pull bar (1) is provided with a recess (4).
2. a kind of swell fixture as claimed in claim 1 is characterized in that: described recess (4) is interior hexagonal deep gouge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201687868U CN201297312Y (en) | 2008-11-25 | 2008-11-25 | Expansive screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201687868U CN201297312Y (en) | 2008-11-25 | 2008-11-25 | Expansive screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201297312Y true CN201297312Y (en) | 2009-08-26 |
Family
ID=41043291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201687868U Expired - Fee Related CN201297312Y (en) | 2008-11-25 | 2008-11-25 | Expansive screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201297312Y (en) |
-
2008
- 2008-11-25 CN CNU2008201687868U patent/CN201297312Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090826 Termination date: 20091225 |